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What is the meaning of “do not populate test points” in a board schematic

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I was finding test points in a schematic of an Analog Devices Evaluation board. In one of the schematic pages, there is a clause mentioned "do not populate test points".

Does anyone knows what it means ?

embedded schematics testing

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asked Jul 19 at 1:23

nurabhanurabha

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add a comment
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2

$begingroup$

I was finding test points in a schematic of an Analog Devices Evaluation board. In one of the schematic pages, there is a clause mentioned "do not populate test points".

Does anyone knows what it means ?

embedded schematics testing

share|improve this question

asked Jul 19 at 1:23

nurabhanurabha

46133 gold badges1010 silver badges2121 bronze badges

$endgroup$

add a comment
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$begingroup$

I was finding test points in a schematic of an Analog Devices Evaluation board. In one of the schematic pages, there is a clause mentioned "do not populate test points".

Does anyone knows what it means ?

embedded schematics testing

share|improve this question

asked Jul 19 at 1:23

nurabhanurabha

46133 gold badges1010 silver badges2121 bronze badges

$endgroup$

share|improve this question

asked Jul 19 at 1:23

nurabhanurabha

46133 gold badges1010 silver badges2121 bronze badges

share|improve this question

asked Jul 19 at 1:23

nurabhanurabha

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asked Jul 19 at 1:23

nurabhanurabha

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asked Jul 19 at 1:23

nurabhanurabha

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2 Answers
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Yes, it means they are points provided for testing purposes so do not connect components etc to those points.

share|improve this answer

answered Jul 19 at 1:32

Solar MikeSolar Mike

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$endgroup$

• 
  
  
  

  
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  $begingroup$
  Additionally, it is an easy way to exclude a component from BOM (as TP have reference designators) , some EDA have special component type for test points that do not require this work around, but even then Often a PCB assembly house will inquire about missing designators between CAD data and the BOM . so an explicit DNP is a normal engineering style to address this when there is a production requirement to check BOM and CAD for consistency.
  $endgroup$
  – crasic
  Jul 19 at 1:44
  
  

  
  
  
  

add a comment
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12

$begingroup$

Test points are very useful during development. A test point can be a flat SMT pad, or a throughole pad. Sometimes, a test point has a loop for clipping a probe onto (throughole examples, SMT examples). Sometimes, these loops are used only during R&D testing. In mass production the test points are contacted by automated test equipment, and the loops aren't installed in production to save cost.

share|improve this answer

edited Jul 19 at 15:46

answered Jul 19 at 1:48

Nick Alexeev♦Nick Alexeev

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• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  I love test points, having worked on boards without them for a year.
  $endgroup$
  – DKNguyen
  Jul 19 at 15:49
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  @DKNguyen For sanity's sake, at least a ground testpoint for a scope probe, please.
  $endgroup$
  – Spehro Pefhany
  Jul 19 at 15:50
  

  
  
  
  

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2

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Yes, it means they are points provided for testing purposes so do not connect components etc to those points.

share|improve this answer

answered Jul 19 at 1:32

Solar MikeSolar Mike

3,12811 gold badge44 silver badges1818 bronze badges

$endgroup$

• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  $begingroup$
  Additionally, it is an easy way to exclude a component from BOM (as TP have reference designators) , some EDA have special component type for test points that do not require this work around, but even then Often a PCB assembly house will inquire about missing designators between CAD data and the BOM . so an explicit DNP is a normal engineering style to address this when there is a production requirement to check BOM and CAD for consistency.
  $endgroup$
  – crasic
  Jul 19 at 1:44
  
  

  
  
  
  

add a comment
 | 

2

$begingroup$

Yes, it means they are points provided for testing purposes so do not connect components etc to those points.

share|improve this answer

answered Jul 19 at 1:32

Solar MikeSolar Mike

3,12811 gold badge44 silver badges1818 bronze badges

$endgroup$

• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  $begingroup$
  Additionally, it is an easy way to exclude a component from BOM (as TP have reference designators) , some EDA have special component type for test points that do not require this work around, but even then Often a PCB assembly house will inquire about missing designators between CAD data and the BOM . so an explicit DNP is a normal engineering style to address this when there is a production requirement to check BOM and CAD for consistency.
  $endgroup$
  – crasic
  Jul 19 at 1:44
  
  

  
  
  
  

add a comment
 | 

$begingroup$

Yes, it means they are points provided for testing purposes so do not connect components etc to those points.

share|improve this answer

answered Jul 19 at 1:32

Solar MikeSolar Mike

3,12811 gold badge44 silver badges1818 bronze badges

$endgroup$

share|improve this answer

answered Jul 19 at 1:32

Solar MikeSolar Mike

3,12811 gold badge44 silver badges1818 bronze badges

answered Jul 19 at 1:32

Solar MikeSolar Mike

3,12811 gold badge44 silver badges1818 bronze badges

answered Jul 19 at 1:32

Solar MikeSolar Mike

3,12811 gold badge44 silver badges1818 bronze badges

12

$begingroup$

Test points are very useful during development. A test point can be a flat SMT pad, or a throughole pad. Sometimes, a test point has a loop for clipping a probe onto (throughole examples, SMT examples). Sometimes, these loops are used only during R&D testing. In mass production the test points are contacted by automated test equipment, and the loops aren't installed in production to save cost.

share|improve this answer

edited Jul 19 at 15:46

answered Jul 19 at 1:48

Nick Alexeev♦Nick Alexeev

33.7k1010 gold badges7070 silver badges182182 bronze badges

$endgroup$

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  I love test points, having worked on boards without them for a year.
  $endgroup$
  – DKNguyen
  Jul 19 at 15:49
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  @DKNguyen For sanity's sake, at least a ground testpoint for a scope probe, please.
  $endgroup$
  – Spehro Pefhany
  Jul 19 at 15:50
  

  
  
  
  

add a comment
 | 

12

$begingroup$

Test points are very useful during development. A test point can be a flat SMT pad, or a throughole pad. Sometimes, a test point has a loop for clipping a probe onto (throughole examples, SMT examples). Sometimes, these loops are used only during R&D testing. In mass production the test points are contacted by automated test equipment, and the loops aren't installed in production to save cost.

share|improve this answer

edited Jul 19 at 15:46

answered Jul 19 at 1:48

Nick Alexeev♦Nick Alexeev

33.7k1010 gold badges7070 silver badges182182 bronze badges

$endgroup$

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  I love test points, having worked on boards without them for a year.
  $endgroup$
  – DKNguyen
  Jul 19 at 15:49
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  @DKNguyen For sanity's sake, at least a ground testpoint for a scope probe, please.
  $endgroup$
  – Spehro Pefhany
  Jul 19 at 15:50
  

  
  
  
  

add a comment
 | 

$begingroup$

Test points are very useful during development. A test point can be a flat SMT pad, or a throughole pad. Sometimes, a test point has a loop for clipping a probe onto (throughole examples, SMT examples). Sometimes, these loops are used only during R&D testing. In mass production the test points are contacted by automated test equipment, and the loops aren't installed in production to save cost.

share|improve this answer

edited Jul 19 at 15:46

answered Jul 19 at 1:48

Nick Alexeev♦Nick Alexeev

33.7k1010 gold badges7070 silver badges182182 bronze badges

$endgroup$

share|improve this answer

edited Jul 19 at 15:46

answered Jul 19 at 1:48

Nick Alexeev♦Nick Alexeev

33.7k1010 gold badges7070 silver badges182182 bronze badges

answered Jul 19 at 1:48

Nick Alexeev♦Nick Alexeev

33.7k1010 gold badges7070 silver badges182182 bronze badges

answered Jul 19 at 1:48

Nick Alexeev♦Nick Alexeev

33.7k1010 gold badges7070 silver badges182182 bronze badges